Portion of a motorcycle cylinder head



FIG. 1 is a side view of a motorcycle having a cylinder head embodying the present invention.

FIG. 2 is an enlarged partial side view of the cylinder head of FIG. 1; and,

FIG. 3 is an enlarged partial front view of the cylinder head of FIG. 1.

The present application is directed to the design illustrated in the drawings. The other features of the drawings, such as the motorcycle shown in FIG. 1, are not considered part of the design sought to be patented, and have accordingly been shown in broken lines.

The design sought to be patented is not visible in the rear, top, bottom and left side views. Accordingly, these views have been omitted. 

The ornamental design for a portion of a motorcycle cylinder head, as shown and described. 